CN104515443A - Deep foundation pit lithosphere blasting protection method - Google Patents
Deep foundation pit lithosphere blasting protection method Download PDFInfo
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- CN104515443A CN104515443A CN201310448017.9A CN201310448017A CN104515443A CN 104515443 A CN104515443 A CN 104515443A CN 201310448017 A CN201310448017 A CN 201310448017A CN 104515443 A CN104515443 A CN 104515443A
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- wound
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Abstract
The invention relates to the underground construction, in particular to the deep foundation pit lithosphere blasting. A deep foundation pit lithosphere blasting protection method comprises the step of carving a wound surface, exceeding each blasting depth, on at least one edge of the outermost lap of a foundation pit lithosphere required to be blasted by mechanical carving or blasting carving. The method can guarantee no influence on surrounding environment from blasting shock waves in the blasting operation so as to reduce or prevent the potential safety hazard of the surrounding environment caused by the blasting shock waves.
Description
Technical field
The present invention relates to underground construction, particularly relate to the explosion of deep basal pit lithosphere.
Background technology
When deep foundation pit construction runs into lithosphere, blast working need be taked, the vibration wave carrying out generation during explosion in foundation ditch can impact impact to neighboring area sensitive part, particularly electric meter, close on excavation after deep basal pit, inflammable and explosive facility and structures etc. run into the impact shock of Blasting shock wave after, there will be operation irregularity to damage, cave in, to reveal and store Combinations product such as to come off at the phenomenon, bring great potential safety hazard to engineering construction and surrounding enviroment.
The preventive means that current deep basal pit explosion reduces Blasting shock wave mainly adopts shallow-layer how fried some explosion, utilize shallow-layer how fried some explosion to reduce the quick-fried point of deep basal pit explosion to the shock wave effect of burst region periphery, although this technology effectively can reduce the energy of blasting process borehole blasting substrate areas shock wave, but the degree of depth of each blast working is limited, blow-up point is more, cause that the blast working cycle is long, explosion medication is more, construction area periphery because of shortcomings such as blast working restrictive cycle are long, therefore design this blasting protection method.
Summary of the invention
The present invention is intended to the problems referred to above solving prior art, provides the means of defence of a kind of deep basal pit lithosphere explosion.When the present invention can ensure bursting work, surrounding enviroment are by the impact of Blasting shock wave, reduce or avoid the potential safety hazard that surrounding enviroment are brought because of Blasting shock wave.
In order to solve the problems of the technologies described above, the means of defence of a kind of deep basal pit lithosphere of the present invention explosion, comprising: utilize machinery to start or explosion start the outmost turns needing explosion foundation ditch lithosphere at least output one exceed each length of shot face the surface of a wound.
The means of defence of described a kind of deep basal pit lithosphere explosion, described explosion is started and is comprised: start hole and blast hole can be located by unwrapping wire in advance, by the probing reserving position and carry out starting hole and explosive hole; Arrange first to get out in the outside of blast hole when the surface of a wound is faced in explosion exceed blast hole quantity and the degree of depth start hole, inner side blast hole adopts shallow-layer successively explosion, after every separate explosion, the rubble of explosion layer is cleared up in time, start prepare, and so forth until Blasting Excavation is to the projected depth of facing the surface of a wound for interior interior zone explosion and lower floor face the surface of a wound.
Present invention process principle is simple, convenient operation.When the present invention can ensure bursting work, surrounding enviroment are by the impact of Blasting shock wave, reduce or avoid the potential safety hazard that surrounding enviroment are brought because of Blasting shock wave.Adopt this invention can shorten the construction period of explosion and cleaning excavation, reduce construction cost, good economic benefit and social benefit can be obtained.
Detailed description of the invention
Below, in conjunction with concrete mode, the present invention is further illustrated: the means of defence of a kind of deep basal pit lithosphere of the present invention explosion, comprising: utilize machinery to start or explosion start the outmost turns needing explosion foundation ditch lithosphere at least output one exceed each length of shot face the surface of a wound.
First need the outmost turns of explosion foundation ditch lithosphere output one exceed each length of shot face the surface of a wound, face the surface of a wound to arrange according to the situation of bursting work periphery sensitive part, can monolaterally arrange, polygon setting and full limit are arranged, arrange first to get out in the outside of blast hole when the surface of a wound is faced in explosion exceed blast hole quantity and the degree of depth start hole, be used for absorbing the shock wave produced when starting face explosion, inner side blast hole adopts shallow-layer repeatedly explosion, when preventing deep layer explosion, depths, rock stratum produces greater impact ripple, after every separate explosion, the rubble of explosion layer is cleared up in time, start prepare for interior interior zone explosion and lower floor face the surface of a wound, and so forth until Blasting Excavation is to projected depth, the method utilizes explosion to face surface of a wound absorption Blasting shock wave, effectively the Blasting shock wave produced during bursting work can be eliminated, prevent the potential safety hazard that the impact because of Blasting shock wave brings to surrounding enviroment.
Claims (2)
1. a means of defence for deep basal pit lithosphere explosion, is characterized in that, it comprises: utilize machinery to start or explosion start the outmost turns needing explosion foundation ditch lithosphere at least output one exceed each length of shot face the surface of a wound.
2. the means of defence of a kind of deep basal pit lithosphere according to claim 1 explosion, is characterized in that, described explosion is started and comprised: start hole and blast hole can be located by unwrapping wire in advance, by the probing reserving position and carry out starting hole and explosive hole; Arrange first to get out in the outside of blast hole when the surface of a wound is faced in explosion exceed blast hole quantity and the degree of depth start hole, inner side blast hole adopts shallow-layer successively explosion, after every separate explosion, the rubble of explosion layer is cleared up in time, start prepare, and so forth until Blasting Excavation is to the projected depth of facing the surface of a wound for interior interior zone explosion and lower floor face the surface of a wound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310448017.9A CN104515443A (en) | 2013-09-27 | 2013-09-27 | Deep foundation pit lithosphere blasting protection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310448017.9A CN104515443A (en) | 2013-09-27 | 2013-09-27 | Deep foundation pit lithosphere blasting protection method |
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| Publication Number | Publication Date |
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| CN104515443A true CN104515443A (en) | 2015-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201310448017.9A Pending CN104515443A (en) | 2013-09-27 | 2013-09-27 | Deep foundation pit lithosphere blasting protection method |
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| CN (1) | CN104515443A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105297741A (en) * | 2015-10-20 | 2016-02-03 | 上海交通大学 | Prevention method for foundation pit retaining structure hole-punching and water-gushing caused by blast of stratum with soft upper portion and hard lower portion |
| CN105865276A (en) * | 2016-03-30 | 2016-08-17 | 中铁二院重庆勘察设计研究院有限责任公司 | Efficient shock absorption blasting and excavation method adopting fishbone-shaped construction guide grooves for large rock deep foundation pit in dense building area |
| CN106440980A (en) * | 2016-09-22 | 2017-02-22 | 广东省建筑工程机械施工有限公司 | Multi-boundary foundation pit blasting method |
| CN106595410A (en) * | 2016-12-24 | 2017-04-26 | 中铁十八局集团有限公司 | Deep foundation pit earth pressure controlled blasting method |
| CN109653209A (en) * | 2019-01-17 | 2019-04-19 | 中交（广州）建设有限公司 | City station rock excavation construction technology |
| CN111854549A (en) * | 2020-07-30 | 2020-10-30 | 四川港航建设工程有限公司 | Large rock foundation pit blasting excavation system and construction method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2256873C1 (en) * | 2004-05-12 | 2005-07-20 | Московский государственный горный университет (МГГУ) | Method for drilling blasting of rocks |
| CN101565949A (en) * | 2008-04-25 | 2009-10-28 | 中冶天工建设有限公司 | Forming method of large shallow foundation pit with soft soil foundation |
| CN101806066A (en) * | 2010-03-26 | 2010-08-18 | 重庆钢铁(集团)有限责任公司 | Method for molding vertical wall of deep foundation pit |
-
2013
- 2013-09-27 CN CN201310448017.9A patent/CN104515443A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2256873C1 (en) * | 2004-05-12 | 2005-07-20 | Московский государственный горный университет (МГГУ) | Method for drilling blasting of rocks |
| CN101565949A (en) * | 2008-04-25 | 2009-10-28 | 中冶天工建设有限公司 | Forming method of large shallow foundation pit with soft soil foundation |
| CN101806066A (en) * | 2010-03-26 | 2010-08-18 | 重庆钢铁(集团)有限责任公司 | Method for molding vertical wall of deep foundation pit |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105297741A (en) * | 2015-10-20 | 2016-02-03 | 上海交通大学 | Prevention method for foundation pit retaining structure hole-punching and water-gushing caused by blast of stratum with soft upper portion and hard lower portion |
| CN105865276A (en) * | 2016-03-30 | 2016-08-17 | 中铁二院重庆勘察设计研究院有限责任公司 | Efficient shock absorption blasting and excavation method adopting fishbone-shaped construction guide grooves for large rock deep foundation pit in dense building area |
| CN106440980A (en) * | 2016-09-22 | 2017-02-22 | 广东省建筑工程机械施工有限公司 | Multi-boundary foundation pit blasting method |
| CN106595410A (en) * | 2016-12-24 | 2017-04-26 | 中铁十八局集团有限公司 | Deep foundation pit earth pressure controlled blasting method |
| CN109653209A (en) * | 2019-01-17 | 2019-04-19 | 中交（广州）建设有限公司 | City station rock excavation construction technology |
| CN111854549A (en) * | 2020-07-30 | 2020-10-30 | 四川港航建设工程有限公司 | Large rock foundation pit blasting excavation system and construction method |
| CN111854549B (en) * | 2020-07-30 | 2023-04-28 | 四川港航建设工程有限公司 | Blasting excavation system for large-scale rock foundation pit and construction method |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150415 |